Boiler-maker&#39;s tool



March 26, 1929. H. A. LACERDA BOILER MAKERS TOOL 2 Sheets-Sheet 1 Filed Dec. 1, 1925 March 26, 1929. RD 1,707,124

BOILER MAKER'S TOOL Filed Dec. 1925 2 Sheets-Sheet 2 Patented Mar. 26, 1929.

uurrsn s'rAT HARRY A. IJACERIDA, 0F WATERVLIET, NEW YORK.

BOILER-MAKERS TOOL.

Application filed December This invention relates to tools or implements of the class employed in constructing and repairing steam generators and the like, and has for one of its objects to provide a simply constructed implement to facilitate the securing oi. the tlues in the flue Sheets. 1

it more specilic object 01 the invention is the provision oil' a tool of the character de' scribed which is adapted for use with a pneumatic hammer or like oowcr device to simultaneously flare and set an end of a fine tube ot a locomotive engine.

The embodiment of the invention is disclosed in the accompanying drawings in.

" which Figure 1 is a sectional view of portions of a conventional steam generator including a section of the lire box flue sheet and the smoke chamber flue sheet together witha plurality ot the fines, and a plurality of the improved tools employed for setting the flues in the line sheet;

Figure 2 is an elevation, enlarged, ol' the improved tool;

Figure 3 is an end view of the part shown in Figure 2;

Figure 4 is a view, partly in section, illus trating a modification in the construction;

Figure 5 is an end elevation of the part shown in Figure l;

Figure 6 a view illustrating another modification in the construction;

Figure *1" is an end view of the part shown in Figure 6;

liigure S is a view illustrating another mod-- i lication in the construction; and.

Figure 9 is an end view ol the part shown in Figure 8, i

The same reference characters are employed in all off the views in the drawings,

lln Figure 1 shown a portion of a conventional steam generator to illustrate the operation of the improved implement, and in cluding a portion of the lire box flue sheet at 10, a portion of the smoke chamber :liue sheet at 11, and a plurality oi the three at 12, 13, 1.4 and. 15.

The flue 12, is shown disposed in the flue openings in the flue sheets as first inserted with the usual copper ferrule or bushing at 16, before being rolledv The flue 13, is shown after flared and set, and ready for the rolling. The flue 1t shown after being rolled, and the line 15, is shown completely rolled and swagcd. a

T he in'ipmved implement, which is the sub- 1,1925. Serial No. 72,539.

ject of the present application, comprises a stock or body, enlarged intermediate its out to produce an impact flange, as shown at 17, and adapted to besubjected to an impacting and rolling force applied to the terminal or shank 18. The portion of the stock at the other side of the enlargement is reduced away from the enlargement to produce a combined centering and swaging or hanging member, as shown at 19, and preferably curved or concaved shown more clearly in Figure 2. The centering and swaging member 19 and the flange 17 together constitute what may be termed the head oi the tool and it will be observed by referring to the drawings that an annular external shoulder occurs at the juncture of the flange 17 and the member 19.

With an implement thus formed the op eration of setting and flaring the flue ends in the flue sheets is materially improved and danger of splitting the fines obviated. This improved form of implement also obviates any tendency to breakage, avoids abnormal strain upon the in'ipacting and rotating element, for instance, a pneumatic hammer, as the resistance on the relatively short shank is less than that exerted by the ordinary formed shank.

In practice the flue to be set and flared at the fire chamber end is held by a bucking up bar indicated at 20, from end movement againstthe force of the air hammer, or other impacting and rotating device, a. portion of which is indicated at 21. After the lines are set and rolled at the fire chan'iber cnd they are flared and set at the sn'lolre chamber end, by the same implement, as illustrated in l ig ure 1. t

In Figure 6, a slight modification in the construction is shown consisting in forming the portion 19 uuitormly tapered instead oil curved, as shown in Figures 1 and 2.

In Figure 41-7, the portion 19 is shown with the central portion cut out to decrease the weight without decreasing the efliciency.

In Figure 8, the portion 19 is flattened, as shown in Figure 9, which form may be employed under certain circumstances, and en ables the operator to enter the inuplen'ient through the outer sheet wash-out plug opening, as will be obvious and will be toun d con-- venient for use in water tube generators. In practice when cutting the lines at the rotating wheel in the line department, a relatively heavy burr remains on the interior ot the flue, and this burr can be e'llectu ally removed.

by employing the improved implement. B3

1 employing the devicedisclosedin'Figuie 4,

the flue can be reamed out after being inserted in the fine sheetwithon't danger of splitting the flue, and the device Will be self-releasing after being used, and requires no lateral blows to release it. Having descrlbed my invention, that which I claim to be new, and desire toprocure by- Letters Patentijs I b 1. A- tool coinpi i's ng a sli'a'nk and, a head at one end. of theisha'nk, said head having flange at its inner end and a tapering Conibined centering and. swaging ineinbei extentb 111gv from the center of the flange at the side of ement with the shanlg'said shank being and engage with an'end of a locomotive engine flue tube so that 52116101161 o f the'tnbe will be sunultaneo'usl y fiai ed and, set 1n an asso ciated fine sheet when the tool is actuated by said power device.

2. In combination, a tool coin n'ising a shank and ahead at one end of the shank, il; id head having a flange at its inner end and a tapering combined centering and swagg'ing member extending from the center of the flange at the side of the latter opposite to the. shank and in axial alinenient with the shank, said shank being adapted to be aeti'iated by a pneumatic hammer or like power device and said centering and swaging member being adapted to enter and engage with an end 0 l' a locomotive engine flue tube so that said en ofthe tube will be siinu'ltanemisl Ilaeed and set in an associated flue sheet when the tool is actuated by said power device, and a tool for engaging with the opposite end oi? said tube. to prevent axial movementof the tube under the impact of said first nained tool.

In testimony whereof I afiix my signature.

HARRY A. LACEHDA. 

